Fig. 1

Kaplan-Meier survival curves for cancer patients with gastric cancer (a), colon cancer (b), lung cancer (c) and breast cancer (d) were compared with those for matched cancer patients without rheumatic diseases. Tick marks indicate censoring events. The p value was calculated using the log rank test. DM, dermatomyositis; ND, not determined; PM, polymyositis; RA, rheumatoid arthritis; RD, rheumatic disease; SLE, systemic lupus erythematosus; SSc, systemic sclerosis.*p < 0.05, **p < 0.01 and ***p < 0.001 compared with the non-RD exposed cancer cohort